Or we could go even further and include DLR, Thameslink, TfL Rail and the Overground to the idea at 1:23.Following that logic, I live in London, too, because I live in Burgess Hill which is on the Thameslink route!

Seriously though, here's how I see it:When someone says (s)he lives in London, I tend to consider the London boroughs as the boundary.However, when someone talks about travelling to London, I tend to consider Zone 6 the boundary.I don't know why but this makes the most sense to me.

PJ

If you pay a London council too much tax and have red buses & oyster cards then you're probably in London. If your bus is some other colour, lets you pay with cash and only turns up once a fortnight, 'appen you're in t'country.

GW

Categorically: N, E, S, W, NW, SW, SE, EC, and WC. TW is Twickenham, not London. The clue's in the initialism... The boroughs beyond are Greater London, which is an area greater-than-London. Again, the clue's in the name. Motorways etc are clearly distractions from the postal and eloctoral Truth.... Best wishes, Gx

GW

And anyone who's travelling to Uxbridge (zone 6) from outside, and calls that 'going to London', needs to have a word with themselves

Greg Tingey

You forgot another significant boundary:That of the Metropolitan Police Area ....

David Walters

The coal tax posts are the only boundary that matter!

Kay

There are other definitions used by statistics companies that include an even bigger London. The London Metropolitan area and the London Urban areas both extend far into the home counties. They are used because in urban studies, a city creates a "commuter belt" where a certain percentage of a town or nearby city (normally 10-15%) travel into the big city for work and / or other essential life purposes. When this happens, these places either become part of the commuter belt OR something known as "satellite towns". These are almost always included when big stats are made on populations. This explains why sometimes you will read somewhere that London has 13 million people and New York 15 million. Now whether these locals themselves know they are a part of these numbers is a whole different debate...

MP

Parts of Surrey are in Travelcard Zone 6 as well which are served by Southern Metro services to Caterham and Tattenham Corner.

Rob

Central Line stations in Essex (even Epping) are in zone 6. Essex County Council pays TfL for this.